Lowi, Theodore J. American government : power and purpose / Theodore J. Lowi, Benjamin Ginsberg, Kenneth A. Shepsle. - 10th ed. - New York : W. W. Norton & Company, c2008. - xvii, 444 p. : ill., col map ; 23 cm. Includes bibliographical references and index. ISBN: 9780393931211 Subjects--Geographic Terms: United States--Politics and government. Dewey Class. No.: 320.473/ L918a